A polarized image acquisition section 11a acquires a polarized image of a target object having one or more polarization directions. A polarization parameter acquisition section 12-1 calculates the average brightness α of a polarization model on the basis of a non-polarized image subjected to sensitivity correction. Further, the polarization parameter acquisition section 12-1 calculates the amplitude β of the polarization model on the basis of the calculated average brightness α, pre-stored information regarding the zenith angle θ of the normal line of the target object, a refractive index r, and reflectance property information indicative of whether a subject is diffuse reflection or specular reflection. A polarization model detection section 13-1 is able to detect the polarization properties of the target object through the use of an image polarized in one or more polarization directions, by calculating the phase ϕ of the polarization model on the basis of a polarized image of the target object having one or more polarization directions, the average brightness α, and the amplitude β of the polarization model.
Legal claims defining the scope of protection, as filed with the USPTO.
15. The image processing device according to claim 1, further comprising a polarized image acquisition circuitry configured to acquire the polarized image of the target object.
16. The image processing device according to claim 1, further comprising a reflection removal circuitry configured to remove reflection components from an image of the target object based on the polarized image of the target object and the detected polarization model.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
October 12, 2018
May 30, 2023
Browse 5M+ US patents with plain-English claim translations and AI-generated analysis.